Method of forming boxes and tubes.



- a ai /m6 R. -s. BOLGER. METHOD OF FORMING BOXES AND TUBES.

APPLICATION FILED FEB.1,1912. r Patented Mar. 17, 19M

8 SHEETS-SHEET 1.

WITNESSES INVENTOR R. S. BOLGER, METHOD OF FORMING BOXES AND TUBES.

I APPLIUATION FILED FEB. 1,1912 1 ,.090,593. Patented Mar. 17,1914.

, 3 SHBETBBHEET 3.

5OURCE OF ADHESIVE WIT/M85958 zw aflww 7%, 714 44% ROBERT s. IBOLG-ER,on NEW YORK,

N. Y., Ass'IGNoR or ONE-HALF T0 CHARLES LEFFLER 8: COMPANY, 'ACORPORATION OF NEW YORK.

METHOD. OF FORMING BOXES AND TUBES.

Specification of Letters Patent. Pat t 7, 1914, Application filedFebruary 1, 1912. Serial No. 674,697.

To all whom it may concern Be it known that I, ROBERT S. BOLGER, acitizen of the United States, residing at the city of New York, in theborough of Queens and State of New York, have invented certainnew anduseful Improvements in Met-hods of Forming Boxes and'Tubes, of which thefollowing is a fulhclear, and exact description.

This invention relates to a novel method of forming paper andcardboardtubing or boxes such as are used for example for the preservation andshipmentof incandescent mantles, bottles, and like fragile articles.

Heretofore it has been customary to wrap paper, fiber, cardboard,,strawboard, or like material, upon mandrels in forming mailing v tubesor boxes, the paper being fed to the mandrel in the form of-a strip.Thereafter for the purpose of stiffening the tube or box and also forthe purpose of providing cushioned walls for the same, it has beencustomary to insert longitudinally a cylinder of corrugated paper orcardboard; the corrugations extending usually longitudinally of thecylindrical box or tube. This method of constructing devices of thischaracter involves several steps and consumes time and labor which it isthe purpose of my present invention to obviate. I furthermore aim toimprove the quality of the product, both in strength and appearance.These and other ob'ects'of my invention will .be hereinafter referred toand the novel method and means whereby they may be attained will be moreparticularly set forth in the claims appended hereto.

I am aware that my novel process may be .efi'ectuated in a variety ofways without departing Ifromthespirit of'my invention and that theproduct may be modified to a can siderable extent within the purview ofthe said inventiomand hence desire to be limited views, I haveexemplifie claims.

only by. the scopeof the said appended In the drawin which formaparthereof and in which HE: reference characters designate like partsthroughout the .several certain preferred forms of product and apreferred method of Referring to thedrawingsiz 1 is a perspective viewof a double-back cylindrical which en ages box constructed in accordancewith the principles of my invention, port-ions of the structure beingbroken away for the purposes of lllustration.

Fig. 2 is a vertical median section of .the device shown in Fig. 1. Fi

Fig. 1, the section being taken on line VV of Fig. 2. Fig. 6 is asimilar section taken on line VIVI of Fig. 3. Fig. 7 is a blank or webfrom which is made the body of the double-back box shown in Fig. 1. Fig.8 is an edge view of said blank. Fig. 9 is a blank or web for thesingle-back tube shown in Fig. 3. Fig. 10 is an edge view of said blanl.Fig. 11 is a blank for a double-back tube. Fig. 12 is an edge view ofthe same. Fig. 13 is a perspective view of the said double-back tube.Fig. 141's a vertical median section ofthe same. Fig. 15 illustrates astep in the process of forming a box or tube. Fig. 16 illustrates asecond step in the said process. Fig. 17 illustrates the step ofcompleting a single-back box or tube, and Fig. 18 illustrates a portionof the method of making a double-back box or tube.

Referring first to Figs. 1, 2 and 5, it will be observed that the boxtherein shown comprises preferably a plurality. of outer layers ofnon-corrugated material. Within these outer layers is an intermediatecylindrical wrapping 2 which is' corrugated longitudinally in thedirection of the axis of the box and within this corrugated wrapping isa layer 3 of preferably plain -or non-corrugated strip material. Thecorrugated and inner plain portions respectively designated 2 and 3 are,in this particular form of the device, of somewhat less height than theplain outer-portion or layers 1, so

that as seen in Figs. 1 and 2 space is afforded at the bottom of the boxfor the insertion of an inverted cup-shaped bottom 4 the plaincylindrical inner wall of .t e outer layer 1. provided a space A due tothe fact that the upper edge of the corrugated and interior There isalso portions do not reach the upper edge of the layers 1, which permitsof inserting'a droplight Welsbach mantle into the box and supporting thesame upon the upper edge of the inner wrappin 3. The usual cap 5 may ofcourse be app led to the tube .of the box to afford a closure therefor,but since this cap forms no part of the present in vention it has beenmerely indicated in dotted lines in Fig. 2.

The tube shown in Figs. 3, 4 and 6 is of.

very similar construction to the box shown in Fig. 1, save that in thisinstance there is no bottom 4 nor inner wrapping 3. The

- outer layers 1, of which there are two in a box or tube is formed froma single strip.-

Referring to Figs. 7 and 8, I have shown a blank from which the body ofthe box may be wrapped. This blank is in the form of a single, somewhatelongated strip and by reason of-the product sought in this, particularinstance, to wit, a box for incandescent mantles, thls strip is madenarrower along a portion of its length, the wide portion,

designated 1, corresponding to the material designated 1 in Figs. 1 and2, while the corrugated and somewhat narrower portion 2 correspondstothe corrugated portion 2 in said first mentioned figures; whilesimilarly the narrow plain portion 3 corresponds to the inner lining ofthe box. The blank from which the tube shown in Figs. 3 and 4 is formed,is shown in Figs.,9 and 10. The I blank is, in this instance, of uniformwidth,

corresponding with the uniform width of the several layers, corrugatedand plain, in

the said tube. .Hereagain the plain outer. wall-forming portion has beendesi ated 1 and the corrugated portion 2. If it is desired to form adouble-blank mailing tube such as'is shown in Figs. 13 and 14, the

blankwill assume the-form shown in Figs. 11 and 12 Herein again theouter wrappings have been designated 1, the corru-' gated section 2, andthe inner plain layer or lining 3'. Since all parts of the body of thebox or tube, as the case may be, are inte ally united or connectedtogether, it is possible-to wrap them around a mandrel, one on top ofthe other, and thus assemble said body in practically one operation.While the corrugated portion of. the strip may be formed in the b ankand before attempting any wrapp ng operation of the same I preferto formthis corrugated section durmg the procedure of wrapping the strip uponthe mandrel. As-shown in Fig.

35. 15, two rolls, respectively designated 10 and ing the presentprocess, since it is obvious that it may be efiected manually, although.

in practice of course a suitable machine wlll be provided for carryingit out.

As shown in said Fi 15 the rolls have I been moved substantia y intoengagement with each other so as to firmly press the strip,'broadlydesignated 13, therebetween and the said rolls'have been in this caserotated through almostv 360, thereby corrugatin'g a ortion of thesaidstrip 13 in the manner s own. -While the rolls are bein rotated,adhesive material may be applied to the outer surface of the corrugatedportion, this material being supplied from some suitable source ofadhesive, as forexample the paste brush '14. It it be desired to form asingle-corrugated layer or wrapping, the

rolls will be stopped wlienrthev-have been advanced butslightly fartherthan the position shown in Fig. 15. Thereafter one or the other of theserolls may be moved away fromits engagement'with the co-acting roll, asshown in Fig. 16, wherein the roll marked 11 has been dropped out ofengagement with the strip 13. T ereafter the roll 10 is ro tated in thesame direction in which it had previously been rotated, while the pasteor other adhesive is applied to the outer surface of the strip 13 .s'othat the plain or-non-cor-. rugated portion. of the strip which iswrapped around the corrugated section, which we may here identify, as2',=forms the non-corrugated or outer layers 1, previously referred to.During this operation pressure may be applied to the outer surface ofthe plain section ofthe strip as by. means ofa pressure'roll 15 or inany other suitable manner, to insure proper engagementbetween-theseveral contacting parts. When the strip 13 has been almostcompletely wound into position, the paste brush, if this be the [sourceof adhesive employed,

may be removed, as shown in Fig. 17, and

the end of the strip may thenbe rolled by .means of the pressure-roll 15around into firm engagement with the adjacent layer or wall 1,completing the tube. .The. tube is then removed from the mandrel, and.pre-

sents substantially the appearance of that shown'in Inshapm a box suchas 4 is shown in ig. 1, the proce ure is the same,

save that ,roll '11 is not drawn up into engagement with the roll'10untilafter 'a plain section 3 ofthe body has been wrapped around themandrel. If it be desired to have but asingle layer 3; after the mandrelhas 11, are adapted for engagement with" each been .rotate'd throughasingle turn,the corthe manner shown in Fig. -18. Herein-the adhesive isapplied 'as by means of a paste brush 14 to that portion ofthe stripbetween the mandrel 16 and the roll -10. The roll 10 in this arrangementis rotated by means of the handle 12 and the lower roll 11 is slidablyjournaled as at 17, a'lever 18.

serving to affect the upwar displacement of said lower roll whendesired, 'the roll fallin by gravity when the 'hand is remove from thelever 18. a

It is obvious ofcourse that the box or tube may have the cushioning orcellular portion thereof formed other than corrugated, and I hence donot desire to be limited to such particular for-In or disposition of themate rial of which such sect-ion IS composed. I

have hence applied the term waved to this surface, the significance oftheterm being that portions of said surface are struck uplaterally so asto form aseries of cush ions, no matter how disposed. v

Having described my invention, I claim: 1. The method of forming bodiesfor .boxes, tubes and the likeconsisting in pressing lateralprojectionsinto limited 1 ortions of a continuous, strip of sheet material leav-'ing the remainder of the stri plain and then Wrapping orrolling saistrip upon itself to form at least one complete layer of plain materialand at least one complete layer ofthe projection bearinwlaterial sub-'stanti'ally as described.

2. The method of forming bodies for boxes, tubes and the like,conslsting in cor-- rugatin the middle portion of a continuous strip 0material leaving the end portions plain, then wrapping or rolling thestrip substantially as described. a

a In witness whereof, I subscrlbe my signature, in the presence of twowitnesses.

I v ROBERT S. BOLGER.

Witnesses:

WALDO M. CHABIN,

I JAMES DANTQNIO.

said cushions may be upon itself thereby superposing alternate layers ofplain and corrugated. material,

